iAFS2 automatic focuser
iOptron
Woburn, MA
The iAFS2 automatic focuser is designed to stay focused even after it is adjusted. It allows the user to control its movement three ways: by connecting to a computer, with affixed adjuster buttons, or with a manual focus wheel. The focuser also features a built-in temperature sensor and two USB ports. An optional adapter allows it to fit on most rigs.
$368.00
Buy it at High Point Scientific
support@ioptron.com
www.ioptron.com
RASA 6 optical tube
Celestron
Torrance, CA
The RASA 6 optical tube assembly is a versatile machine. It has a fast f/2.2 focal ratio for capturing deeper sky images with a shorter exposure time, while also allowing for a wider 3.8° view of the cosmos without aberrations. Weighing in at only 8.4 pounds (3.8 kilograms), it is easily portable. The scope also comes with a cooling fan and a filter drawer.
$1,699.00
Buy it at High Point Scientific
ustechsupport@celestron.com
www.celestron.com
Battle of the Big Bang
The University of Chicago Press
Chicago, IL
Battle of the Big Bang, by cosmologist Niayesh Afshordi and science communicator Phil Halper, offers a look at the competing ideas surrounding the formation of the universe. Afshordi’s research and Halper’s interviews with prominent scientists inform their examination of the many theories of how the cosmos came to be, in this 360-page book.
$32.50 hardback
$31.99 ebook
(773) 702-7700
https://press.uchicago.edu
Buy it at Amazon.com
